The Los Angeles Opera declined Friday to release any details of its promised investigation into allegations of sexual harassment against opera legend Placido Domingo, the company's longtime general director, including whether it has already started.

Also Friday, the union that represents opera singers said it plans a meeting in Los Angeles next week to address its members' concerns ahead of the LA company's season opener Sept. 14.

Len Egert, the executive director of the American Guild of Musical Artists, told The Associated Press that the union has been receiving its own reports from members since an AP story earlier this week detailing accusations against the 78-year-old singing star .

Hours after the AP story was released Tuesday detailing the allegations, the LA Opera announced it would engage outside counsel to investigate the "concerning allegations."

Three of the nine women who accused the singer of harassment and abuse of power described encounters they said took place while working with Domingo at the LA organization. The nine women and dozens of others interviewed said Domingo's behavior was an open secret in the industry and that he pursued younger women with impunity.

LA Opera would not disclose who would be conducting the investigation, how it would be carried out, when it would start or its expected duration.

A spokeswoman for the company said Friday LA Opera will share details when they have information and that there was currently nothing to add beyond the statement released Tuesday.

Domingo is widely credited with raising the profile of LA Opera, where he served as an artistic consultant from 1984 to 2000, artistic director from 2000 to 2003 and, finally, general director from 2003 until now. His current contract runs through the 2021-22 season.

In its initial statement, LA Opera said Domingo "has been a dynamic creative force in the life of LA Opera" but that it is committed to ensuring that its employees and artists "be treated respectfully and feel safe and secure."

Domingo did not respond to detailed questions from the AP about specific incidents. But he issued a statement calling the allegations "deeply troubling, and as presented, inaccurate," adding "I believed that all of my interactions and relationships were always welcomed and consensual."

The allegations in the AP story sparked a global discussion among opera singers on social media forums about the culture of sexual misconduct in the classical music world and the belief that opera companies have long been aware of bad behavior and tolerated it, particularly when the accused are people in positions of power.

Aside from LA Opera, the other women quoted in the story recounted incidents they said took place at other venues, including Washington Opera and the Metropolitan Opera in New York, ranging from 1988 into the mid-2000s.

Some of the women told the AP that Domingo used his power at the LA company and elsewhere to try to pressure them into sexual relationships, with several saying that he dangled jobs and then sometimes punished them professionally if they refused his advances.

The Philadelphia Orchestra and San Francisco Opera announced they would cancel upcoming performances featuring the star. The Metropolitan Opera said it would await the results of LA Opera's investigation "before making any final decisions about Mr. Domingo's future at the Met," where he is scheduled to appear next month.

The American Guild of Musical Artists issued a statement calling for wider investigations across the opera world.

"AGMA became aware of serious allegations of sexual harassment made by multiple women against Placido Domingo. We have contacted our employers to demand investigations into these allegations," said the statement issued earlier this week.

Since then, "through our confidential reporting system we have been receiving reports from members," Egert said Friday. "We are providing timely, confidential advice and guidance to these artists." He did not elaborate.

Egert said that AGMA will be "closely monitoring the internal LA Opera investigation" and has scheduled a membership meeting in Los Angeles early next week, prior to the start of rehearsals, to address any member concerns on questions. The LA Opera 2019-2020 season starts Sept. 14 with "La Boheme."

Asked if the union was aware of Domingo's alleged behavior previously, he said, "AGMA did not receive complaints from its members prior to the recent news reports."

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Associated Press Writer Jocelyn Noveck contributed from New York.

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